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September Weather in Yamoto, Japan

Last updated: August 23, 2025

In September, the average temperature in Yamoto, Japan is a pleasant 22°C (71°F). Visitors can expect a range from a cool 12°C (54°F) to a warm 31°C (88°F). However, prepare for some rain, as the area receives about 123 mm (4.9 in) of precipitation over 13 days. The average humidity hovers around a humid 86%, creating a tropical feel in the air.

September Temperature in Yamoto

In September in Yamoto, the average temperature is 22°C (71°F). Maximums can reach 31°C (88°F), and minimums can be as low as 12°C (54°F). This pleasant weather makes it an ideal time for travelers to explore and enjoy outdoor activities in Yamoto.

September Weather in Yamoto: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Yamoto, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yamoto, September typically has an average temperature of 22°C (71°F), with highs reaching up to 31°C (88°F) and lows dropping to around 12°C (54°F).
JanFebMarAprMayJunJulAugSepOctNovDec373844506066737771625141
Data source: Temperature data for Yamoto generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Yamoto

In Yamoto in September, the precipitation amount is 123 mm (4.9 in) over the course of 13 days.

September Precipitation Trends in Yamoto

The chart displays monthly precipitation patterns in Yamoto, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Yamoto, September typically receives around 123 mm (4.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec464110410597901771681231923757
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yamoto

In Yamoto in September humidity is 86%. With an average temperature of 22°C (71°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel muggy and draining.

September Average Humidity in Yamoto

This chart illustrates the average monthly humidity levels in Yamoto, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Yamoto is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%79%77%75%80%87%92%92%86%82%79%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Yamoto

In Yamoto in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Yamoto.

Maximum UV Index Levels in Yamoto for September

The chart shows the monthly maximum UV Index (UVI) for Yamoto in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Yamoto typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec346891011109643
Data source: Yamoto September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Yamoto Compares to Other Months

Weather in Yamoto varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Yamoto, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Yamoto, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (37°F)46 mm (1.8 inches)80%moderate
February Weather3°C (38°F)41 mm (1.6 inches)79%moderate
March Weather7°C (44°F)104 mm (4.1 inches)77%high
April Weather10°C (51°F)105 mm (4.1 inches)75%very high
May Weather16°C (60°F)97 mm (3.8 inches)80%very high
June Weather19°C (66°F)90 mm (3.6 inches)87%very high
July Weather23°C (74°F)177 mm (7.0 inches)92%extreme
August Weather25°C (77°F)168 mm (6.6 inches)92%very high
September Weather22°C (71°F)123 mm (4.9 inches)86%very high
October Weather17°C (62°F)192 mm (7.6 inches)82%high
November Weather11°C (52°F)37 mm (1.5 inches)79%moderate
December Weather5°C (41°F)57 mm (2.3 inches)80%moderate

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